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https://issues.apache.org/jira/browse/FLINK-33288?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17776183#comment-17776183
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Zhanghao Chen commented on FLINK-33288:
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HI [~mapohl], thanks for joining the discussion here. +1 for adding recursive
deletion of empty folders within the HA storage folder + the JRS storage
folder. Actually, only one-level of recursion should be enough in the two cases
here. For HA storage folder cleanup, we just need to add an additional check if
there exist some other files/subfolders before delete the dir based on
FLINK-30513's solution. For cleaning the JRS storage folder, we'll need to
implement a cleanup method for JobResultStore, which is called on cluster
termination and takes responsibility of cleaning up any empty folders. I'd be
willing to pick up from where I left in FLINK-30513 to fix the leakage issue.
> Empty directory residue with appid name in HA(highly-available) related
> directory of hdfs, not cleaned
> ------------------------------------------------------------------------------------------------------
>
> Key: FLINK-33288
> URL: https://issues.apache.org/jira/browse/FLINK-33288
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Configuration
> Affects Versions: 1.16.2, 1.17.1
> Reporter: Xin Chen
> Priority: Major
> Attachments: image-2023-10-17-16-43-07-859.png, screenshot-1.png,
> screenshot-2.png
>
>
> When I submitted a large number of tasks in Flink-on-Yarn mode and
> successfully executed, I unexpectedly found a large number of empty
> directories left in the directory related to 'high availability.storageDir'
> on hdfs, with appids as shown below. I believe this must be cleared! However,
> after verification in the environments of 1.16.2 and 1.17.1, it was proven
> that neither of them solved this problem.
> my flink-conf.yaml about 'high availability.storageDir':
> {code:java}
> high-availability.storageDir: hdfs://hdfsHACluster/flink/recovery
> {code}
> !screenshot-1.png!
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